OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application) x2 s+ c- G# J
/*
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* edma_test.c
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** A6 |; q: J1 S. z3 f0 z' L2 g
* brief EDMA3 Test Application/ v' u0 T8 P% b. D7 ~( y) u
*
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* This file contains EDMA3 Test code.: ]! a% F, _% w( m# N
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 x8 q2 A# ]& ]8 i' k! y, x
* TO CHANGE. e; t' g7 a8 P9 H) g
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 I" M$ r6 e4 Z- E9 l
*/ Y ^9 L2 @9 q
* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as( h- o9 S5 u/ h% y! B$ g
* published by the Free Software Foundation version 2.
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*+ z, \7 X- w# q- Y5 M$ _
* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 ]1 q' M1 {+ E% D
* kind, whether express or implied; without even the implied warranty' Y7 \. { h! y, |
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 n% a* P- @, O$ O
* GNU General Public License for more details.1 Z$ c: a# N: }# o3 Q- J
*/
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#include <linux/module.h>1 ?& v0 J/ x( {1 b
#include <linux/init.h>1 a1 }3 Z6 [/ A: _% z/ V& A/ k
#include <linux/errno.h>0 r& m9 R; Z6 B9 t. g* f1 @
#include <linux/types.h>% H) l8 y( _8 b1 r! p
#include <linux/interrupt.h>
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#include <asm/io.h>2 G; U& R; y* Y2 {
#include <linux/moduleparam.h>3 ~: H7 q& ~0 r* s+ Z- i% D
#include <linux/sysctl.h>. Y$ g9 S2 N% t
#include <linux/mm.h>
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#include <linux/dma-mapping.h># V4 H# \! W. H/ G( q1 m
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG1 R, H% ?) ~, ?+ K! X8 B
/*#define EDMA3_DEBUG*/1 ^* i; j2 d( i( c; X* t; L& z
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN& Z* b, V1 j+ r! ]0 T6 @
#define DMA_FN_OUT
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#endif9 n/ ?+ K1 f! Q+ [: d5 s5 F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 |8 W9 l) u" A+ t6 o- ]
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20: Z o9 D5 U9 u. m* `
#define ITCINTEN_SHIFT 21' c* a) f) j c& K6 b. i# j9 T
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 r% O0 l4 |5 _0 I
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% G. w( a& W }" Z: c
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dma_addr_t dmaphyssrc1 = 0;4 Q2 W; A' ]6 |1 d- ~
dma_addr_t dmaphyssrc2 = 0;% c% s4 q5 R9 m& D9 P8 H, u
dma_addr_t dmaphysdest1 = 0;6 q: l7 q V; A$ x$ S) l" a* y
dma_addr_t dmaphysdest2 = 0;' W6 @+ y0 W& \7 T
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char *dmabufsrc1 = NULL;4 C2 l3 E/ f+ U, A
char *dmabufsrc2 = NULL;, }7 F H: ^4 Z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;# g7 Z5 w6 N; H k; G+ s
static int bcnt = 8; i& P* C; @0 J. f5 q, y
static int ccnt = 8;1 |* X- V; E. }8 ^2 v% i4 S" M
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module_param(acnt, int, S_IRUGO);9 t4 ]5 z: d0 h( s4 R) C
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动